198080416091 has 2 divisors, whose sum is σ = 198080416092. Its totient is φ = 198080416090.

The previous prime is 198080416087. The next prime is 198080416123. The reversal of 198080416091 is 190614080891.

198080416091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198080416091 - 2² = 198080416087 is a prime.

It is not a weakly prime, because it can be changed into another prime (198080416021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99040208045 + 99040208046.

It is an arithmetic number, because the mean of its divisors is an integer number (99040208046).

Almost surely, 2^198080416091 is an apocalyptic number.

198080416091 is a deficient number, since it is larger than the sum of its proper divisors (1).

198080416091 is an equidigital number, since it uses as much as digits as its factorization.

198080416091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 198080416091 in words is "one hundred ninety-eight billion, eighty million, four hundred sixteen thousand, ninety-one".